Instagram's first ever photograph revealed, two years after being snapped

Happy birthday Instagram! Though the photo-sharing site wasn’t made available to the public until October 2010, the first Instagram image was taken two years ago when the app went by the codename, erm, Codename.

The photo is of a rather cute looking puppy sitting next to a sandaled foot. This was the first of more than one billion photos that have been shot using Instagram, with the site boasting over 50 million users across the globe.

Available as a mobile app, Instagram enables users to shoot photographs with their camera phones before sharing them on social networks including Facebook and Twitter. Various filters can be applied to the images to give them a retro feel.